Hydropneumothorax with irregular pleural thickening in a patient with rheumatoid arthritis

Chest radiograph (A) shows an atypical loculated right pneumothorax with two separate collections of pleural gas in a patient with known rheumatoid arthritis. CT thorax image (B) shows chronic right hydropneumothorax with gas-liquid level due to bronchopleural fistula and irregular visceral and parietal pleural thickening.